Trolley-wheel.



PATENTED AUG. 2l, 1906.

J. M. KING. TROLLEY WHEEL.

APPLICATION FILED MAY a1, 1906.

I f. H n/ b. Q Q/w Fd- H @NEED SVEAEES PATENT carica.

I JAMES MILES KING, oF DANVILIIIavIEGINIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, loEoNE-.IIALF,To n. S. `LANIEILOE 4DANvILLE,

VIRGlNlA.

No. eaaors.

A,Specilcaton-of Letters. Patent.

Patented Aug. 21, 1906.

Application filed May 3l, 1906. Serial No. 319.593.

.I do hereby declarel'the following tube afull,

clear, and exact description` of the invention, such as will enable othersslrilled, in the artfto which it appertainsfto malgre and ulsefthe same. u

My inventionrelates to new and useful improvements in the class oft rolley-whe'els, andmore particularly top automatic means for keeping the axis thereof continuallyflubricated. i

Iny order that my invention maybe thoroughly understood, I ,have ,illustrated same yin the accompanyingV drawings, and a full and exact ,description vthereof is lcontained in the annexed specification.

In the accompanying drawings,.Figurei l is a central vertical section through my improved wheel. Fig. 2 isl a verticaltransverse section through the same. v-Figswand 4 are edge views ofthe oil-cup. In the several views likeletters Ofreference ydesignate similar parts of my improved construction. A

A in thedrawings designates. the wheel,l provided on its periphery with the annular groove a, and an ori ce a', concentric with the center of the wheel. vB is an oil-retaining receptacle of circular form and lof sufficient size to` tightly fit into the orifice a of said wheel A. This oil-well B comprises ayshell` having a peripheral face 1)adapted tol engage with the inside of the orifice `a of the wheel A, and outwardly-flaring sides b b, provided with the orifices b2 b2, concentric with the center of the wheel A. C is a cylindrical bushing adapted to be driven through the orifices b2 b2 in said oil-well, forming an annular oil-tight chamber b3 in said oil-well B. The peripheral face b of said oil-well B is provided with the spiral groove D, preferably extending twice around the same. d 'CZ are radiallyextending passages connecting the ends of said groove. D with the oil-chamber b3. Eis a cylindrical passage extending through the oil-chamber b3 and connecting said groove D- midway between its ends with the interior of .the bushingvC. `F is athreaded orifice in the side bzofsaid oil-chamber b andis adapted topermitthe inhow of a lubricant into said ,chamber and lis provided with a threaded F. `Grisapinlocated in the tube E, ,thesame being of slightlyl less diameter than l.the said, tube 'andbeing sufficiently short not to obstructthegroove while bearing against axis.l 4

' From the foregoing the operation of my device maybe Ireadily understood and is as,follows, assuming the partsfto` be assembled as Fig., 2,*vwith1 the chamber I)v filled with oil or other lubricant. Asthe wheel starts to rotate andgwhile l gaining motionthe inlet to that part ofthe groove Dv which faces the direction offrotationwill scoop up the oil, and as soon as the wheel begins to revolve rapidly' the opposite -inlet will. begin to take in a oil, and, hence by centrifugal force the groove Dl will bexkept full of oil during the rotation of the wheel. As thewheel takes up and yloses motion in startingand stopping, the oil ductor tube E will fill with oil from the groove 1D. lIt is obviousthat unless the oil is fed gradually from the ductvE there would be a great waste oflubricant, Yand it is to overcome. this .difficulty that` I placethe pin G in said duct. ,Thefunction of this pinv is as fol- :lows: When the wheel is at a standstill or is just;k beginning to` move, the position of the pin will be governed by theforce of gravity, and `hence as thewheel begins to rotate it Awill be forcedaccording to the position of the Ap'assageE toward and away, from the axis, and as the pin is slightly smaller than 'said passagethe pin will actas a pump, forcing sufficient` but not a superfluous amount of oil to the axis. When the wheel revolves at high speed, it is apparent that the pin will be number of times.

IOO

'stantially as described.

'rior of said well and concentric with the center of the wheel, a radially-disposed inlet-` port from said oil-well to said circular passage, a radially-disposed passage. affordingv communication between said circular passage and the bearing portion of the wheel and a pin located in said radially-disposed passage, said pin being adapted to slide therein, sub- 3. A trolley-Wheel, having a central oil Well, a spiral oil-passage around the exterior. thereof and concentric with the center of the wheel, a radially-disposed inlet-port lroml said oil-Well to said spiral passage and a pas-1 sage connecting said spiral passage with the bearing portion of the wheel, substantially as described. o l

4. A trolley-wheel, having a central oil-, well, a spiral oil-passage around the same andi concentric with the center of the wheel, radi-- ally-disposed inlets from said oil-well to the@ ends of said passage and an oil-passage con-il necting said spiral passage, midway between? its ends, with the bearing portion of the' Wheel, substantially as described.

5. A trolley-wheel, having a central oil- Well, a spiral oil-passage around the same and concentric with the center of the wheel, radially-disposed inlets from said oil-well to the endsof said passage, a radially-disposed passage connecting said spiral passage midway between its ends with the bearing portion of the wheel and a pin located in said radiallydisposed passage, said pin being adapted to slide therein, substantially as described.

6. The combination with a trolley-wheel having a central opening, of a circular oilvand forming an oil-passage between said oilwell and said wheel, radially-disposed inletlports from said oil-chamber to said groove and a passage connecting said -groove with the interior of said bearing portion, substantially as described.

',Z. The combination with a trolley-wheel provided with a central opening, of a circular oil-well adapted to be driven'into said opening in said wheel 'and having its walls provided with central openings, a bushing .fitted in said openings in said oil-well, forming an annular oil-chamber around said bushing, the peripheral face of said oil-Well being provided with a spiral groove extending around same and forming an oil-passage between said oilwell and said wheel, radially-disposed inletports from said oil-chamber to said groove, and a passage connecting said groove with the interior of said bushing, substantially as described.

8. The combination with a trolley-wlieel provided withv a central opening, of acircular oil-well adapted t'o be driven into said opening insaid wheel andhaving its walls provided with central openings, a bushing adapted to be driven through said openings in said oil-well, forming an annular oil-chamber around said bushing, the peripheral face of said oil-well being provided with `a sprial groove extending around same forming an oil-passage between said oil-well and said wheel, radially-disposed inlet-ports from said oil-chamber to said groove, a radially-disposed passage connecting said groove with the interior of said bushing and a pin located in said passage and adapted to slide therein, substantially as described.

In testimony whereof I al'lix my signature in the presence of two witnesses.

JAMES MILES KING. Witnesses:

JAs. D. HARRISON, KENNETH WIMELEITH. 

